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Controlling mechani...
Controlling mechanisms of aluminium in soil solution : An evaluation of 180 of podzolic forest soils
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- van Hees, P. A. W. (författare)
- Mittuniversitetet,Institutionen för naturvetenskap (-2008)
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- Lundström, Ulla (författare)
- Mittuniversitetet,Institutionen för naturvetenskap (-2008)
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- Danielsson, R. (författare)
- Department of Analytical Chemistry, Uppsala University, P.O. Box 531, S-751 21 Uppsala
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- Nyberg, L. (författare)
- Department of Environmental Sciences, University of Karlstad, S-651 88 Karlstad
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(creator_code:org_t)
- 2001
- 2001
- Engelska.
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Ingår i: Chemosphere. - 0045-6535 .- 1879-1298. ; 45:6-7, s. 1091-1101
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- To monitor the level of soil acidification in the county of Värmland in the middle west of Sweden 180 podzolic forest soils were investigated. Soil solutions from four horizons were obtained by centrifugation and the soil was sampled for a determination of the exchangeable pool by extraction. The concentrations of inorganic Al and its fraction of the total Al in solution were greater in the south of the county (up to 50%). The factors influencing the total Al and free inorganic Al3+ in the soil solutions were evaluated. Saturation indices (SI) for five different mineral phases were calculated but none implied equilibrium conditions. The relationships between pAl3+ and pH (in the pH range 4-6.2) gave slopes of about 1, which indicated that ion exchange/complexation reactions may be important for determining the Al3+ concentration in the B and C horizons. In the E horizon solutions complexation with soluble organic acids seemed to be the major factor which influenced the Al3+ activity. The influence of organic matter on Al solubility was supported by partial least square (PLS) regressions.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Aluminium
- Forest soil
- Soil solution
- Solubility control
- Chemistry
- Kemi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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